Converting Heat Energy Units: Joules to Calories and Beyond

The video tutorial explains how to convert different units of heat energy, focusing on joules, calories, and food calories. It provides step-by-step examples, including converting joules to calories, kilojoules to food calories, and calculating the energy content in food items like cheeseburgers and snack bars. The tutorial emphasizes understanding conversion factors and applying them to solve energy conversion problems.

What is the conversion factor from joules to calories?

• 1 calorie = 4.184 joules

• 1 calorie = 3.184 joules

• 1 calorie = 5.184 joules

• 1 calorie = 2.184 joules

How many calories are equivalent to 500 joules?

• 121.5 calories

• 118.5 calories

• 120.5 calories

• 119.5 calories

What is the first step in converting kilojoules to food calories?

• Convert lowercase calories to food calories

• Convert joules to lowercase calories

• Convert kilojoules to joules

• Convert food calories to joules

How many food calories are in 750 kilojoules?

• 179.3 food calories

• 180.3 food calories

• 178.3 food calories

• 181.3 food calories

What is the conversion factor from food calories to joules?

• 1 food calorie = 2184 joules

• 1 food calorie = 4184 joules

• 1 food calorie = 3184 joules

• 1 food calorie = 5184 joules

How many joules are in a cheeseburger with 700 food calories?

• 2,928,800 joules

• 2,828,800 joules

• 2,928,900 joules

• 2,928,000 joules

What is the conversion factor from grams of fat to food calories?

• 1 gram of fat = 8 food calories

• 1 gram of fat = 9 food calories

• 1 gram of fat = 7 food calories

• 1 gram of fat = 10 food calories

How many joules are in 15 grams of fat?

• 564,640 joules

• 564,740 joules

• 564,940 joules

• 564,840 joules

What is the conversion factor from lowercase calories to joules?

• 1 calorie = 4.184 joules

• 1 calorie = 5.184 joules

• 1 calorie = 2.184 joules

• 1 calorie = 3.184 joules

How many lowercase calories are in one food calorie?

• 1,500 calories

• 500 calories

• 1,000 calories

• 2,000 calories